[patch 23/37] genirq/msi: Use device MSI properties
From: Thomas Gleixner <hidden>
Date: 2021-11-27 01:24:46
Also in:
dmaengine, linux-iommu, linux-pci, lkml
instead of fiddling with MSI descriptors. Signed-off-by: Thomas Gleixner <redacted> Cc: x86@kernel.org --- kernel/irq/msi.c | 17 ++--------------- 1 file changed, 2 insertions(+), 15 deletions(-)
--- a/kernel/irq/msi.c
+++ b/kernel/irq/msi.c@@ -114,21 +114,8 @@ int msi_setup_device_data(struct device static ssize_t msi_mode_show(struct device *dev, struct device_attribute *attr, char *buf) { - struct msi_desc *entry; - bool is_msix = false; - unsigned long irq; - int retval; - - retval = kstrtoul(attr->attr.name, 10, &irq); - if (retval) - return retval; - - entry = irq_get_msi_desc(irq); - if (!entry) - return -ENODEV; - - if (dev_is_pci(dev)) - is_msix = entry->pci.msi_attrib.is_msix; + /* MSI vs. MSIX is per device not per interrupt */ + bool is_msix = msi_device_has_property(dev, MSI_PROP_PCI_MSIX); return sysfs_emit(buf, "%s\n", is_msix ? "msix" : "msi"); }
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